Sucker-rod joint.



Patented De@ 18,1917

Fl rs 2 lNvi-:Nj'on 7 1 l f. l/. A y N if, l E iin! 6 The inventionherenutilizes metallic rods .which are strong and less expensive thanthe Wooden rods ordinarily used. In addition, the simple 'and eiiicientcoupling provides a swivel connection which cannot be uncoupled so longas the' parts are within the well tubing. l i l,

I claim: f

'1. 'In combination, sucker rod sections provided with coupling heads,each head.I

having exterior longitudinal fluid passa es Within the Well tubing, eachhead being a so exteriorly formed to engage the interior surface of theWell tubing and thereby maintain the approximate longitudinal alincmentof said heads, one head being formed with a longitudinal socket openingthrough its lend and side and the other head having a complementaryportion adapted to enter said socket by relative lateral movements ofthe heads at the exterior-of the well tubing, said heads providingcorresponding transverse abutinents` to sustain end thrust and tomaintain the heads against approximate independent longitudinalmovement, said socket and complementary portion being relativelyforined'toV provide for relative rotary movement of either lhead withyrespect to the other when coupled together.

'2. In combination, sucker rod sections provided with a pair ofcoperating coupling heads, one of said heads .having a socket openingthrough the end and a side of the head -and contracted intermediate itslength, the longitudinal axis of :said socket being approximately alinedwith the longitudinal axis of the head and having its interiorfsiirfacesapproximately concentric with said' axis, the other head havingacomplementary reduced portion the longitudinal axis of which isapproximatel, alined with the longitudinal axisof the liead and havingits exterior surface approximately concentric with said axis, said headshaving abut- `ting transverse shoulders'to resist independ-- entlongitudinal movement in either direction when assembled, substantiallyas de- 3..In4 combination, sucker 'rod sections provided with enlargedAlaterally-separable, coupling headspixed and in continuation of' the-ends offsaldL sections, the Vmeeting ends of. saidrods formed tolaterally interlock against material longitudinal movement ineitherfdirectonaiijd to permit' lateral sepa-v ration when removed fromthe tubing, each head` having beveled-end longitudinal radil allyvprojecting spaced wings to engage the well tubing with a-w'orkin fit tomaintain said heads longitudinall a ined and to pi'event swaying oftherody and to provide exterior 'interveninor longitudinal liquidpassages, substantial as described.

-4. In combination, sucker rod sections provided with coupling heads,one of said heads having a socket with its longitudinal axisapproximately alincd with the' longitudinal axis of the head andlaterally opening througha side thereof and longitudinally openingthrough the end of the head,

thc other head having a complementary por tionv laterall movable to andfrom. said socket and interlocking therewith to normally maintain saidheads in longitudinal alinement and against substantial independentlongitudinal movement in either direction, the` longitudinal axis ofsaid complementa ry portion being approximately alined with thelongitudinal axis oif -its head, the interior and exterior surfaces ofsaid socket and portion being formed to permit-independent rotation osaid heads on their common longitudinal axis, one of said heads providedwith a longitudinallyyielding catch pin alined with said axis ofindependent rotation, the other head having a socket normally receivingsaid pin and alined with' the longitudinal axis thereof.

5. In combination, sucker rod sections provided with coupling heads, oneof said heads having a longitudinal central socket opening through theouter end thereof and having an interna] intermediate shoulder,

said socket throu hout its length opening through a side o the head andlhaving a central depression in its inner end wall, the other head havinga complementary central longitudinal extension formed to laterally entersaid socket and having approximatelyv cylindrical surfaces and anintermediate annular shoulderz said extension having a centrallongitudinal yielding catch pir' projecting from its end and adapted toenter said depression. In testimony whereof, I aiiix my signature inpresence of two Witnesses.

, CLARK F.;RIGBY. -Witnesses:

` G. A. ,Moniiow,

E. CT Rioux.

